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Thread: Optical Transistor for Terahertz Radiation Amplification

  1. #1
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    Optical Transistor for Terahertz Radiation Amplification

    The authors, Villegas, Kusmartsev, and Savenko, propose to use a graphene-superconductor hybrid to amplify terahertz radiation over a broad range (0.1 to 7.6 THz). The situation is similar to optical pumping for a population inversion in lasers, except that here the amplification occurs over a frequency range, while lasers are monochromatic. SEE:https://arxiv.org/abs/1812.01182

    pete

  2. #2
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    I wonder what this could be used for

  3. #3
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    Quote Originally Posted by publiusr View Post
    I wonder what this could be used for
    publiusr One use might be cancer diagnostics. THz radiation is non-ionizing, and passes through tissue, but is attenuated by water content, nevertheless, it does contrast tumors....SEE:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3496499/

    pete
    Last edited by trinitree88; 2019-Oct-07 at 06:28 PM. Reason: typo

  4. #4
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    Quote Originally Posted by trinitree88 View Post
    The authors, Villegas, Kusmartsev, and Savenko, propose to use a graphene-superconductor hybrid to amplify terahertz radiation over a broad range (0.1 to 7.6 THz). The situation is similar to optical pumping for a population inversion in lasers, except that here the amplification occurs over a frequency range, while lasers are monochromatic. SEE:https://arxiv.org/abs/1812.01182

    pete
    Intriguing, but I'll wait for actual experiments before getting too excited. There have been a great many proposals over the last decade in particular, but most experimental results have shown that Murphy trumps QM. Plus, the need to operate at such low temperatures imposes practical limitations. But a very interesting proposal, I agree.

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